O2 Sensor Malfunction

[heavyfoot]

I'm working on a SDVE tune. Had question about difference in LTFT between banks. While working on VE tune I created 4 maps. LTFTB1, LTFTB2, STFTB1, and STFTB2. Basically Im looking at the short and long term fuel trims based off of MAP and RPM. What I noticed is that bank 1 has tons of cells filled in. All of the values are of course 0 because in the SDVE tune they are turned off. But the cells at least have values. With bank 2 only about 25% of the cells are filled in. I would think the same number of cells should be filled in for both banks. I am not getting any MIL lights at all. Do I have a trashed bank 2 O2 sensor.:nixweiss:

[TAQuickness]

perhaps you are hiding cells with a low count, or have a filter applied?

[joecar]

Check cell hiding/filtering...
otherwise Bank 2 may have a bad O2 sensor...
please post images of the maps for LTFT1 and LTFT2;
also, log the O2 sensor voltages (HO2S11 and HO2S21) and post an image of the log chart.

[heavyfoot]

don't have laptop today. will do tomorrow.

[heavyfoot]

Swapped sensors. Still no data above a MAP of 30. I tried logging data with different tunes. Finally decided to delete the maps and recreate them for bank 2. Success!! Apparently I made a mistake upon initially creating the maps for bank 2.

thanks for the help guys.

[joecar]

Glad you found it and that it was easy to fix... :cheers: